Пример #1
0
 /**
  * Find the class for the projection
  *
  * @param proj projection
  * @return corresponding ProjectionClass (or null if not found)
  */
 private ProjectionClass findProjectionClass(Projection proj) {
   Class want = proj.getClass();
   ComboBoxModel projClassList = projClassCB.getModel();
   for (int i = 0; i < projClassList.getSize(); i++) {
     ProjectionClass pc = (ProjectionClass) projClassList.getElementAt(i);
     if (want.equals(pc.projClass)) {
       return pc;
     }
   }
   return null;
 }
Пример #2
0
  /**
   * @return the result tuple
   * @exception JoinsException some join exception
   * @exception IOException I/O errors
   * @exception InvalidTupleSizeException invalid tuple size
   * @exception InvalidTypeException tuple type not valid
   * @exception PageNotReadException exception from lower layer
   * @exception PredEvalException exception from PredEval class
   * @exception UnknowAttrType attribute type unknown
   * @exception FieldNumberOutOfBoundException array out of bounds
   * @exception WrongPermat exception for wrong FldSpec argument
   */
  public Tuple get_next()
      throws JoinsException, IOException, InvalidTupleSizeException, InvalidTypeException,
          PageNotReadException, PredEvalException, UnknowAttrType, FieldNumberOutOfBoundException,
          WrongPermat {
    RID rid = new RID();
    ;

    while (true) {
      if ((tuple1 = scan.getNext(rid)) == null) {
        return null;
      }

      tuple1.setHdr(in1_len, _in1, s_sizes);
      if (PredEval.Eval(OutputFilter, tuple1, null, _in1, null) == true) {
        Projection.Project(tuple1, _in1, Jtuple, perm_mat, nOutFlds);
        return Jtuple;
      }
    }
  }
Пример #3
0
 private boolean isAvailable() {
   if (aladin.calque == null) return false;
   Plan p = aladin.calque.getPlanRef();
   return p != null && Projection.isOk(p.projd);
 }